Shimano ST-CT90 is designed for controlling cantilever brakes on bicycles. It features an ergonomic design for comfortable handling and secure grip. The brake lever provides precise and responsive braking, allowing for controlled deceleration and safe riding. Its robust construction ensures durability and reliability, making it suitable for various riding conditions. The ST-CT90 enhances overall bike control and safety, enabling cyclists to navigate different terrains and traffic situations confidently.